Catalyst assembly, purification device and refrigerator

Abstract

The utility model relates to the technical field of household appliances, and provides a catalyst assembly, a purification device and a refrigerator. The catalyst assembly comprises a catalyst block, a first electrode, a second electrode and a third electrode, the first electrode and the second electrode are arranged on two opposite sides of the catalyst block, and the second electrode is suitable for forming a plasma electric field with the first electrode; the third electrode is arranged on the second side of the catalyst block, the second electrode is provided with a discharge part facing the third electrode, and the discharge part is suitable for ionizing discharge to the third electrode. According to the catalyst assembly disclosed by the invention, when air enters the catalyst assembly, the second electrode and the first electrode can form a plasma electric field, and meanwhile, the discharge part of the second electrode and the third electrode generate ionization discharge; high-concentration ozone / high-energy electrons, anions, excited particles and free radicals with strong oxidizing property can be generated between the second electrode and the third electrode, and the high-activity free radicals such as the substances can degrade peculiar smell and bacteria, so that the air purification efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a catalyst component, a purification device and a refrigerator. Background Art

[0002] During the use of the refrigerator's fresh-keeping compartment, due to long-term sealing, a large amount of odor will be generated inside the refrigerator. When these odors are mixed, strange smells will be produced, which are difficult for users to accept. Therefore, more and more odor purification technologies are used on refrigerators. At present, the odor purification technologies adopted in the refrigerator industry mainly include physical adsorption type, photocatalyst catalysis type and plasma purification type. However, the existing odor purification technologies have the defects of incomplete decomposition of odor molecules, easy quenching of effective substances, difficult reduction of ozone concentration, and poor purification effect. Summary of the Utility Model

[0003] This application aims to solve at least one of the technical problems existing in the related technologies. For this purpose, this application proposes a catalyst component to solve the defect of poor purification effect of the existing catalyst component.

[0004] This application also proposes a purification device.

[0005] This application also proposes a refrigerator.

[0006] The catalyst component proposed according to the first aspect embodiment of this application includes:

[0007] A catalyst block;

[0008] A first electrode disposed on the first side of the catalyst block;

[0009] A second electrode disposed on the second side of the catalyst block, the first side and the second side of the catalyst block are opposite, and the second electrode is adapted to form a plasma electric field with the first electrode;

[0010] A third electrode disposed on the second side of the catalyst block, and the second electrode and the third electrode are disposed opposite to each other. The second electrode is provided with a discharge component facing the third electrode, and the discharge component is adapted to ionize and discharge towards the third electrode.

[0011] For the catalyst assembly according to the embodiments of the present application, when air enters the catalyst assembly, the second electrode can form a plasma electric field with the first electrode. At the same time, the discharge component of the second electrode undergoes ionization discharge with the third electrode, and high-concentration ozone / high-energy electrons, negative ions, excited-state particles, and strongly oxidizing free radicals are generated between the second electrode and the third electrode. These highly active free radicals can degrade odors and bacteria, causing large odor molecules to degrade into short-chain small molecules, which belongs to a process of pre-treating odors. At the same time, the active substances generated by the pre-discharge ionization of air will be adsorbed onto the catalyst block, and the plasma electric field will greatly accelerate the degradation of odor gas molecules and ozone on the catalyst block, improving the air purification efficiency.

[0012] According to an embodiment of the present application, the discharge component is a needle tip structure, and the third electrode is provided with an arc structure corresponding to the discharge component, and the needle tip of the needle tip structure is located at the center of the arc structure;

[0013] Alternatively, the discharge component is a needle tip structure, and the third electrode is provided with a receiving needle tip structure corresponding to the needle tip structure, and the receiving needle tip structure faces the second electrode.

[0014] According to an embodiment of the present application, at least one of the first electrode, the second electrode, and the third electrode is a titanium alloy electrode, a manganese alloy electrode, or a stainless steel electrode.

[0015] According to an embodiment of the present application, it includes a first housing and a second housing that are detachably connected. The first housing and the second housing are insulating housings. The first electrode is provided in the first housing, the second electrode and the third electrode are provided in the second housing, an installation space is formed between the first housing and the second housing, and the catalyst block is provided in the installation space.

[0016] According to an embodiment of the present application, the first housing is provided with a first limiting groove, and a part of the first electrode is embedded in the first limiting groove; the second housing is provided with a second limiting groove and a third limiting groove, a part of the second electrode is embedded in the second limiting groove, and a part of the third electrode is embedded in the third limiting groove.

[0017] According to an embodiment of the present application, the catalyst block is provided with ventilation holes.

[0018] For the purification device according to the second aspect embodiments of the present application, it includes:

[0019] A device main body, with an accommodation cavity formed inside;

[0020] A fan, provided in the device main body, for providing air flow to the accommodation cavity;

[0021] The above catalyst assembly is disposed in the accommodation cavity.

[0022] According to an embodiment of the present application, the purification device includes a power supply, the power supply includes a low-voltage input terminal and a high-voltage output terminal, the voltage of the low-voltage input terminal is 5 to 12V, the high-voltage output terminal is a single-pulse DC voltage, the pulse peak voltage is between -10KV and +10KV, and the first electrode, the second electrode and the third electrode are connected to the high-voltage output terminal.

[0023] According to an embodiment of the present application, the voltages of the first electrode and the third electrode are the same, the second electrode is a negative high voltage, and the voltage value of the second electrode is greater than the voltage values of the first electrode and the third electrode.

[0024] The refrigerator according to the third aspect embodiment of the present application includes the above catalyst assembly.

[0025] The additional aspects and advantages of the present application will be partly given in the following description, partly will become obvious from the following description, or be understood through the practice of the present application. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will briefly introduce the drawings required for use in the description of the embodiments or the related art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 It is a schematic structural diagram of the catalyst assembly provided by the embodiment of the present application.

[0028] Figure 2 It is an exploded structural diagram of the catalyst assembly provided by the embodiment of the present application.

[0029] Figure 3 It is a schematic structural diagram of the purification device provided by the embodiment of the present application.

[0030] Reference Signs:

[0031] 10. Catalyst assembly;

[0032] 20. Device main body; 21. Accommodation cavity;

[0033] 30. Fan;

[0034] 40. Power supply;

[0035] 100. First electrode;

[0036] 200. Second electrode; 210. Discharge component

[0037] 300. Third electrode; 310. Arc structure

[0038] 400. Catalyst block; 410. Ventilation hole

[0039] 501. Installation space; 510. First housing; 511. First limiting groove; 520. Second housing; 521. Second limiting groove; 522. Third limiting groove Detailed implementation manners

[0040] The following further describes the implementation manners of the present application in detail in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present application, but cannot be used to limit the scope of the present application

[0041] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance

[0042] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, or a detachable connection, where the fixed connection can include an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances

[0043] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature

[0044] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0045] For the catalyst assembly 10 proposed according to the embodiments of the present application, please refer to Figure 1 and Figure 2 , the catalyst assembly 10 includes a catalyst block 400, a first electrode 100, a second electrode 200, and a third electrode 300. The first electrode 100 is provided on the first side of the catalyst block 400; the second electrode 200 is provided on the second side of the catalyst block 400. The first side of the catalyst block 400 and the second side of the catalyst block 400 are opposite to each other. The second electrode 200 is adapted to form a plasma electric field with the first electrode 100; the third electrode 300 is provided on the second side of the catalyst block 400, and the second electrode 200 and the third electrode 300 are arranged opposite to each other. The second electrode 200 is provided with a discharge component 210 facing the third electrode 300, and the discharge component 210 is adapted to ionize and discharge towards the third electrode 300.

[0046] For the catalyst assembly 10 according to the embodiments of the present application, when air enters the catalyst assembly 10, the second electrode 200 can form a plasma electric field with the first electrode 100. At the same time, the discharge component 210 of the second electrode 200 and the third electrode 300 generate ionization discharge. High-concentration ozone / high-energy electrons, negative ions, excited particles, and highly oxidizing free radicals will be generated between the second electrode 200 and the third electrode 300. These highly active free radicals can degrade odors and bacteria, so that large odor molecules are degraded into short-chain small molecules, which belongs to a process of pre-treating odors; at the same time, the active substances generated by the pre-discharge ionization of air will be adsorbed on the catalyst block 400, and the plasma electric field will greatly accelerate the degradation of odor gas molecules and ozone on the catalyst block 400, thereby improving the air purification efficiency.

[0047] It should be noted that when using plasma purification means to purify air in the related art, if you want to improve the purification ability, you need to increase the voltage, which will generate ozone and require post-treatment. Through the synergistic effect of the first electrode 100, the second electrode 200, and the third electrode 300, the present application increases the generation amount of negative ions, realizes the improvement of the overall purification effect, and at the same time improves the efficiency of the catalyst for ozone degradation, realizes the overall controllability of the ozone concentration, and reduces the need for post-treatment.

[0048] It can be understood that integrating the first electrode 100, the second electrode 200, the third electrode 300, and the catalyst block 400 into one component makes the structure compact and facilitates installation and maintenance. At the same time, the synergistic effect between the components makes the energy utilization efficiency high and the air purification speed fast. The active substances generated by discharge ionization first act as pre-treatment to preliminarily degrade the odors in the air and adsorb some of the active substances onto the catalyst block 400. Subsequently, the plasma electric field further accelerates the degradation of the odor gas molecules and ozone on the catalyst block 400. This dual action mechanism greatly improves the overall effect of air purification.

[0049] The catalyst block 400 can adsorb and catalytically degrade the odor gas molecules and ozone in the air. Its surface characteristics promote the reaction with the active substances and improve the purification efficiency. Among them, the catalyst block 400 can be a ceramic catalyst block 400. The catalyst block 400 has a carrier structure with honeycomb through-holes.

[0050] A catalyst formulation for odor purification and ozone degradation is added to the surface of the catalyst block 400 by coating or impregnation. The catalyst components are mainly manganese dioxide and supplemented by precious metals. The catalyst can serve as a reaction site for odor gas adsorption and catalytic decomposition, extend the residence time of odor molecules at the electrode, and accelerate the removal of odors.

[0051] When the catalyst block 400 is placed in a high-voltage ion field, the catalyst is more likely to undergo a typical catalytic reaction of excitation - reset, thereby improving the catalytic efficiency of the catalyst, extending the service life of the catalyst, and solving the problems of easy failure and short life of the catalyst.

[0052] According to an embodiment of the present application, it includes a first housing 510 and a second housing 520 that are detachably connected. The first housing 510 and the second housing 520 are insulating housings. The first electrode 100 is provided in the first housing 510, the second electrode 200 and the third electrode 300 are provided in the second housing 520. An installation space 501 is formed between the first housing 510 and the second housing 520, and the catalyst block 400 is provided in the installation space 501.

[0053] It can be understood that the first housing 510 and the second housing 520 are made of insulating materials to ensure the electrical isolation between the electrodes and the external environment. The second housing 520 is disposed opposite to the first housing 510 and together constitutes the main structure of the catalyst assembly 10. The space formed between the first housing 510 and the second housing 520 is used to install the catalyst block 400. This space provides a stable installation environment for the catalyst block 400. The catalyst block 400 can adsorb and catalytically degrade the odor gas molecules and ozone in the air, improving the air purification efficiency. The first electrode 100 is fixed on the first housing 510, and the second electrode 200 and the third electrode 300 are fixed on the second housing 520. This layout ensures the relative positions of the electrodes are stable, which is conducive to forming a stable plasma electric field and ionization discharge region.

[0054] In one embodiment, the first housing 510 and the second housing 520 are formed of a flame-retardant plastic such as ABS / PP / glass fiber to form an insulating housing, ensuring the normal discharge of the first electrode 100, the second electrode 200, and the third electrode 300.

[0055] The first housing 510 and the second housing 520 can be snap-fitted together for easy disassembly and installation.

[0056] According to an embodiment of the present application, the first housing 510 is provided with a first limiting groove 511, and a part of the first electrode 100 is embedded in the first limiting groove 511; the second housing 520 is provided with a second limiting groove 521 and a third limiting groove 522, a part of the second electrode 200 is embedded in the second limiting groove 521, and a part of the third electrode 300 is embedded in the third limiting groove 522.

[0057] It can be understood that the first limiting groove 511 is provided on the first housing 510 for accommodating and positioning the first electrode 100. The shape and size of the limiting groove match those of the first electrode 100 to ensure that the electrode can be stably embedded therein. The second limiting groove 521 and the third limiting groove 522 are provided on the second housing 520 for accommodating and positioning the second electrode 200 and the third electrode 300. Similar to the first limiting groove 511, the second limiting groove 521 ensures the stability and precise positioning of the second electrode 200, and the third limiting groove 522 ensures the stability and precise positioning of the third electrode 300. Each electrode is embedded in the corresponding limiting groove according to a predetermined position and angle, which can significantly improve the stability of the electrode. This design prevents the electrodes from moving or loosening during use, thus ensuring the stability of the plasma electric field and ionization discharge and improving the air purification effect.

[0058] According to an embodiment of the present application, at least one of the first electrode 100, the second electrode 200, and the third electrode 300 is a titanium alloy electrode, a manganese alloy electrode, or a stainless steel electrode.

[0059] It is understandable that titanium alloy, manganese alloy, and stainless steel are all materials with good corrosion resistance. In the application of air purification, the first electrode 100, the second electrode 200, and the third electrode 300 may come into contact with various chemical substances and humid air. Therefore, using titanium alloy electrodes, manganese alloy electrodes, and stainless steel electrodes for the electrodes (the first electrode 100, the second electrode 200, and the third electrode 300) can significantly improve the durability of the electrodes and reduce performance degradation or failures caused by corrosion.

[0060] Moreover, titanium alloy electrodes, manganese alloy electrodes, and stainless steel electrodes not only have corrosion resistance but also have high physical stability, are not easily broken, and improve the durability of the catalyst assembly 10.

[0061] In one embodiment, the stainless steel electrode is made of 316 stainless steel.

[0062] According to an embodiment of the present application, the discharge member 210 has a needle tip structure, and the third electrode 300 is provided with an arc structure 310 corresponding to the discharge member 210. The needle tip of the needle tip structure is located at the center of the arc structure 310.

[0063] It is understandable that the discharge member 210 with a needle tip structure can significantly concentrate the electric field intensity, resulting in a high-intensity electric field region near the needle tip. This high-intensity electric field is conducive to the occurrence of ionization discharge, improving the discharge efficiency, and thus generating more active substances such as ozone and negative ions for air purification.

[0064] The third electrode 300 is provided with an arc structure 310 corresponding to the discharge member 210. The arc structure 310 can form a good cooperation with the needle tip structure, jointly form a discharge region with the discharge member 210, optimize the discharge path, and improve the discharge efficiency and energy utilization efficiency. The needle tip of the needle tip structure is located at the center of the arc structure 310. This cooperation method can maximize the concentration of the electric field intensity and optimize the discharge effect.

[0065] Of course, in addition to the arc structure 310, the third electrode 300 corresponding to the discharge member 210 can be other structures, such as the receiving needle tip structure mentioned later, or a fin structure, as long as discharge for generating ozone or ions can be achieved between the discharge member 210 and the third electrode 300.

[0066] According to an embodiment of the present application, the discharge member 210 has a needle tip structure, and the third electrode 300 is provided with a receiving needle tip structure corresponding to the needle tip structure. The receiving needle tip structure faces the second electrode 200.

[0067] It can be understood that for the relatively arranged needle tip structure and receiving needle tip structure, the discharge is concentrated between the needle tip structure and the receiving needle tip structure, which can effectively increase the ionization air efficiency, thereby increasing the quantity of active substances generated by ionization, and further improving the catalytic purification effect of the catalyst assembly 10.

[0068] According to an embodiment of the present application, the catalyst block 400 is provided with ventilation holes 410. The ventilation holes 410 can significantly improve the fluidity of the gas inside the catalyst block 400. The shape of the ventilation holes 410 can be any shape. Exemplarily, the shape of the ventilation holes 410 can be circular, triangular, quadrilateral, pentagonal, hexagonal or other special-shaped structures.

[0069] A plurality of ventilation holes 410 are provided on the catalyst block 400, and the ventilation holes 410 can be evenly distributed on the first catalyst block 400. For example, a honeycomb structure can be formed. In addition, the apertures of the ventilation holes 410 can be inconsistent.

[0070] In one embodiment, the diameter of the through holes of the catalyst block 400 is 1-8 mm.

[0071] For the purification device according to the embodiment of the present application, please refer to Figure 3 , the purification device includes a device main body 20, a fan 30 and the above-mentioned catalyst assembly 10. An accommodation cavity 21 is formed inside the device main body 20; the fan 30 is arranged in the device main body 20 and is used to provide air flow for the accommodation cavity 21; the above-mentioned catalyst assembly 10 is arranged in the accommodation cavity 21.

[0072] It can be understood that an accommodation cavity 21 is formed inside the device main body 20. The accommodation cavity 21 is the main place for the air purification process. The fan 30 can provide stable air flow for the accommodation cavity 21. Through the operation of the fan 30, the air to be purified can be sucked into the accommodation cavity 21 and processed by the catalyst assembly 10, and finally the purified air is discharged. The catalyst assembly 10 generates active substances such as ozone and negative ions through the plasma electric field and ionization discharge, and jointly acts with the catalyst block 400 to achieve air purification.

[0073] In one embodiment, in addition to making the air inside the accommodation cavity 21 flow, the fan 30 can also suck the air to be purified into the accommodation cavity 21 of the device main body 20 through the air inlet. The air processed by the catalyst assembly 10 becomes fresh and clean, and then is discharged from the device main body 20 through the air outlet and enters the room or other spaces that need to be purified.

[0074] According to an embodiment of the present application, the purification device includes a power supply 40. The power supply 40 includes a low-voltage input terminal and a high-voltage output terminal. The voltage of the low-voltage input terminal is 5 to 12V, and the high-voltage output terminal is a single-pulse DC voltage with a pulse peak voltage between -10KV and +10KV. The first electrode 100, the second electrode 200, and the third electrode 300 are connected to the high-voltage output terminal.

[0075] It can be understood that the voltage range of the low-voltage input terminal of the power supply 40 is set between 5 and 12V, ensuring safety when used in the refrigerator. Moreover, the voltage range between 5 and 12V is generally applicable to common power supply 40 adapters or battery-powered systems, facilitating users to connect to the mains power or use a portable power supply 40 for power supply.

[0076] The high-voltage output terminal of the power supply 40 is designed as a single-pulse DC voltage with a pulse peak voltage between -10KV and +10KV. The high-voltage pulse output is the key to generating ionization discharge, which can ensure the formation of a strong enough electric field between the electrodes. The first electrode 100 and the second electrode 200 are connected to the high-voltage output terminal of the power supply 40 to form a plasma electric field, and the second electrode 200 and the third electrode 300 form a high-voltage discharge structure.

[0077] The pulse voltage can reach a very high peak value in a very short time, thus quickly forming a strong electric field between the electrodes and promoting the ionization of air molecules. When the high-voltage is turned on and the pulse is at its peak, the voltage difference is the largest, causing the air in the reaction area to be quickly ionized.

[0078] Moreover, by the intermittent working mode of the pulse voltage, the continuous discharge phenomenon between the electrodes can be reduced, thereby reducing the wear rate of the electrodes and extending their service life.

[0079] In one embodiment, the duty cycle of the power supply 40 is <50%.

[0080] According to an embodiment of the present application, the voltages of the first electrode 100 and the third electrode 300 are the same, the second electrode 200 is at a negative high voltage, and the voltage value of the second electrode 200 is greater than the voltage values of the first electrode 100 and the third electrode 300.

[0081] It can be understood that when the power supply 40 provides a negative high voltage to the second electrode 200, a high-intensity electric field will be formed around the second electrode 200. At the same time, since the voltages of the first electrode 100 and the third electrode 300 are the same and relatively low, a potential difference is formed between them and the second electrode 200. Under the action of the high-intensity electric field, air molecules begin to be ionized, generating high-concentration ozone / high-energy electrons, negative ions, excited-state particles, and highly oxidizing free radicals. These highly reactive free radicals can degrade odors and bacteria, causing large odor molecules to be degraded into short-chain small molecules, which belongs to a pre-treatment process for odors (the second electrode 200 discharges to the third electrode 300); at the same time, the active substances generated by the pre-discharge ionization of air will adsorb to the active centers of the catalyst block 400, greatly accelerating the degradation of odor gas molecules and some volatile organic compounds passing through this area. On the other hand, the high-concentration negative ions generated by the second electrode 200 discharging to the third electrode 300 can react with ozone in the catalyst block 400 to ensure that the ozone concentration in the discharged air meets the national standard requirements.

[0082] According to an embodiment of the present application, when the catalyst assembly 10 includes a first housing 510 and a second housing 520: The device main body 20 is provided with a power connection slot, and the power connection port of the first electrode 100 extends out of the first housing 510 and is connected to the power connection slot, and the power connection ports of the second electrode 200 and the third electrode 300 extend out of the second housing 520 and are connected to the power connection slot.

[0083] It can be understood that the power connection slot is used to receive and fix the electrode power connection ports from the catalyst assembly 10. The design of the power connection slot should ensure the stability and safety of the electrical connection, preventing failures caused by poor contact or short circuits. The power connection port of the first electrode 100 extends out of the first housing 510 and is directly connected to the power connection slot on the device main body 20. This design enables the first electrode 100 to stably receive the power supply from the power supply 40 while maintaining electrical isolation from other parts of the device main body 20.

[0084] Similar to the first electrode 100, the power connection ports of the second electrode 200 and the third electrode 300 also extend out of the second housing 520 and are connected to different power connection slots. This design ensures that the second electrode 200 and the third electrode 300 can also stably receive the power supply and work together with the first electrode 100 to produce the required ionization discharge effect.

[0085] The wiring slot ensures that the electrodes do not leak out, guaranteeing the discharge safety at the edges.

[0086] The refrigerator according to the embodiment of the present application includes the above-mentioned catalyst assembly 10.

[0087] It can be understood that when air enters the catalyst assembly 10, the second electrode 200 can form a plasma electric field with the first electrode 100. At the same time, the discharge component 210 of the second electrode 200 undergoes ionization discharge with the third electrode 300, and a high concentration of ozone / high-energy electrons, negative ions, excited-state particles, and highly oxidizing free radicals will be generated between the second electrode 200 and the third electrode 300. These highly active free radicals can degrade odors and bacteria. The refrigerator integrated with the above catalyst assembly 10 can further improve the cleanliness and health of the internal environment of the refrigerator.

[0088] It should be noted that a dedicated air purification area (such as the air duct of the refrigerator) can be set inside the refrigerator, and the catalyst assembly 10 is installed in this area. After installing the catalyst assembly 10, the refrigerator not only has basic functions such as refrigeration and freezing, but also has the ability to purify air. The electrodes in the catalyst assembly 10 generate ionization discharge under the action of a high-voltage pulse voltage, generating active substances such as ozone and negative ions. These active substances can effectively remove harmful substances such as odors, bacteria, and viruses in the air inside the refrigerator, keeping the air inside the refrigerator fresh and healthy.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that various combinations, modifications, or equivalent replacements of the technical solutions of the present application do not depart from the spirit and scope of the technical solutions of the present application, and should all be covered by the scope of the claims of the present application.

Claims

1. A catalyst assembly (10), characterized in that, Comprising: A catalyst block (400); A first electrode (100), disposed on a first side of the catalyst block (400); A second electrode (200), disposed on a second side of the catalyst block (400), the first side and the second side of the catalyst block (400) being opposite to each other, and the second electrode (200) being adapted to form a plasma electric field with the first electrode (100); A third electrode (300), disposed on the second side of the catalyst block (400), and the second electrode (200) and the third electrode (300) being disposed opposite to each other, the second electrode (200) being provided with a discharge component (210) facing the third electrode (300), and the discharge component (210) being adapted to ionize and discharge towards the third electrode (300).

2. The catalyst assembly (10) according to claim 1, wherein, The discharge component (210) is a tip structure, and the third electrode (300) is provided with an arc structure (310) corresponding to the discharge component (210), and the tip of the tip structure is located at the center of the arc structure (310); Alternatively, the discharge component (210) is a tip structure, and the third electrode (300) is provided with a receiving tip structure corresponding to the tip structure, and the receiving tip structure faces the second electrode (200).

3. The catalyst assembly (10) according to claim 1, wherein, At least one of the first electrode (100), the second electrode (200), and the third electrode (300) is a titanium alloy electrode or a manganese alloy electrode or a stainless steel electrode.

4. The catalyst assembly (10) according to claim 1, characterized in that, Comprising a detachably connected first housing (510) and a second housing (520), the first housing (510) and the second housing (520) being insulating housings, the first electrode (100) being disposed in the first housing (510), the second electrode (200) and the third electrode (300) being disposed in the second housing (520), an installation space (501) being formed between the first housing (510) and the second housing (520), and the catalyst block (400) being disposed in the installation space (501).

5. The catalyst assembly (10) according to claim 4, characterized in that, The first housing (510) is provided with a first limiting groove (511), and a part of the first electrode (100) is embedded in the first limiting groove (511); the second housing (520) is provided with a second limiting groove (521) and a third limiting groove (522), a part of the second electrode (200) is embedded in the second limiting groove (521), and a part of the third electrode (300) is embedded in the third limiting groove (522).

6. The catalyst assembly (10) according to any one of claims 1 to 5, characterized in that, The catalyst block (400) is provided with ventilation holes (410).

7. A purification device, characterized in that, Comprising: A device main body (20), having an accommodation cavity (21) formed therein; A blower (30), disposed on the device main body (20) for providing air flow to the accommodation cavity (21); The catalyst assembly (10) according to any one of claims 1 to 6, the catalyst assembly (10) being disposed in the accommodation cavity (21).

8. The purification device according to claim 7, characterized in that, The purification device includes a power supply (40), the power supply (40) includes a low-voltage input terminal and a high-voltage output terminal, the voltage of the low-voltage input terminal is 5 to 12V, the high-voltage output terminal is a single-pulse DC voltage, and the pulse peak voltage is between -10KV and +10KV. The first electrode (100), the second electrode (200), and the third electrode (300) are connected to the high-voltage output terminal.

9. The purification device according to claim 8, characterized in that, The voltages of the first electrode (100) and the third electrode (300) are the same, the second electrode (200) is a negative high voltage, and the voltage value of the second electrode (200) is greater than the voltage values of the first electrode (100) and the third electrode (300).

10. A refrigerator, characterized in that, It includes the catalyst assembly (10) according to any one of claims 1 to 6.

Images